Disconcertingly I have discovered that the new (v10) PositionIndex is horribly slow. Using Szabolcs's clever GatherBy inversion ...
I've heard lots of people say a function is a first-class object in Mathematica. "Everything is an expression, including function." "There is no distinction between functions and data." Having read ...
Is there any way to completely remove the head of an expression function? For example, how would I remove the head Cos from ...
From all I can see there seems to be no difference between "Wolfram Language" and regular Mathematica. Is Wolfram just a marketing rebranding of Mathematica or is there a new capability I am missing?
When I define functions in Mathematica like: f[x_] := 3 f[x_Integer] := 6 How is the value of f determined? It seems to ...
My current understanding about Mathematica is that everything, at the lowest level, ends up as replacement rules. First question: is this true? Second question: does Mathematica "gloss over" these ...
I need to know how can I count the number of operations performed during a calculation of a CompoundExpression. In some of these expressions there are ...
Possible Duplicate: Functions vs. patterns I thought about describing the context in which I faced this problem, but I figured it is general enough and clear enough to pose it as it is. ...